To provide an electric work machine which can prevent a work plan from being hindered.SOLUTION: A battery system loaded on a battery shovel, an electric work machine, includes: a battery management unit BMU 202 which manages a secondary battery; and a vehicle control unit VCU 208 which has a controller 300 to control the normal charging or the diagnostic charging of the secondary battery. The controller includes: a diagnostic charging recommendation determination unit 301 which determines whether or not to recommend diagnostic charging based on a secondary battery operation history being output from the battery management unit; and a diagnostic charging execution determination unit 302 which, on determination to recommend the diagnostic charging, determines whether or not to execute the diagnostic charging, based on a secondary battery state being output from the battery management unit, an estimated charging time necessary for diagnostic charging and an on-site work plan.SELECTED DRAWING: Figure 3

    【課題】作業計画に支障を与えることを防止できる電動作業機械を提供する。【解決手段】電動作業機械であるバッテリショベルに搭載された電池システムおいて、二次電池を管理する電池管理ユニットBMU202と、二次電池に対し通常充電又は診断用充電を制御するコントローラ300を有する車両制御ユニットVCU208と、を備える。コントローラは、電池管理ユニットから出力される二次電池の稼働履歴に基づいて診断用充電を推奨するか否かを判断する診断用充電推奨判断部301と、推奨すると判断された場合、電池管理ユニットから出力される二次電池の状態、診断用充電に必要な充電推定時間および現場作業計画に基づいて、診断用充電を実施するか否かを判断する診断用充電実施判断部302とを有する。【選択図】図3


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    Title :

    ELECTRIC WORK MACHINE


    Additional title:

    電動作業機械


    Contributors:

    Publication date :

    2022-02-10


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Japanese


    Classification :

    IPC:    H02J CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER , Schaltungsanordnungen oder Systeme für die Abgabe oder Verteilung elektrischer Leistung / B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen / H01M Verfahren oder Mittel, z.B. Batterien, für die direkte Umwandlung von chemischer in elektrische Energie , PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY



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